Holiday Notice

While HKEX’s Hong Kong markets will be closed on 25 May, all MSCI and currency products in the derivatives market will be available for trading. The Hong Kong markets will re-open as usual on 26 May. Please visit the HKEX Calendar for detailed trading arrangements and visit the Derivatives Holiday Trading page for a list of Holiday Trading Products.

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Corporate News Releases
Market Communications
Regulatory Announcements
Participant and Members Circulars
Notices
Market Consultations
Trading Information
IPO Express
18
May 2026
SEOCH
Standardization of Date Format in DCASS Risk Management Reports (including Risk Parameter Files)pdf
Ref Number: ORM/CRC/136/2026
08
May 2026
SEOCH
Adjustment to Display of Underlying Closing Prices of Stock Options in DCASS and Specified Reportspdf
Ref Number: PT/CLR/SEOCH/051/2026
05
May 2026
SEOCH
Collateral Haircut Adjustmentpdf
Ref Number: ORM/CRC/132/2026
04
May 2026
SEOCH
SEOCH Reserve Fund Variable Contributionspdf
Ref Number: ORM/CRC/130/2026
29
Apr 2026
SEOCH
Volatility Scan Range Updatepdf
Ref Number: ORM/CRC/126/2026
27
Apr 2026
SEOCH
Download and Upgrade of Google Chrome Browser for DCASS Onlinepdf
Ref Number: PT/CLR/SEOCH/050/2026
17
Apr 2026
SEOCH
Amendments to the Options Clearing Rules and the Operational Clearing Procedures for Options Trading Exchange Participants of The SEHK Options Clearing House Limited pdf
Ref Number: LSD/017/2026
02
Apr 2026
SEOCH
Collateral Haircut Adjustmentpdf
Ref Number: ORM/CRC/116/2026
01
Apr 2026
SEOCH
Orion Derivatives Platform: Upcoming Town Hallpdf
Ref Number: PT/CLR/SEOCH/044/2026
01
Apr 2026
SEOCH|HKEX Rule Enforcement
2026 Annual Attestation and Inspection Programmepdf
Ref Number: MSM/005/2026
01
Apr 2026
SEOCH
SEOCH Reserve Fund Variable Contributionspdf
Ref Number: ORM/CRC/109/2026
31
Mar 2026
SEOCH|HKEX Rule Enforcement
Compliance Bulletin (Issue No. 17) - (1) Reminder on Large Open Position (“LOP”) Reporting Requirements for Positions Held or Controlled Through Multiple Brokers; (2) Dealings with Suspended Exchange Participants; and (3) Closing of the 2025 Annual Attestation and Inspection Programmepdf
Ref Number: MSM/003/2026
31
Mar 2026
SEOCH|HKEX Rule Enforcement|Stock Connect
Closing of 2025 Annual Attestation and Inspection Programmepdf
Ref Number: MSM/002/2026
31
Mar 2026
SEOCH
Redelivery of surplus cash balance in Hong Kong dollars in a SEOCH Participant’s CCMS Collateral Accountpdf
Ref Number: PT/OEC/SEOCH/042/2026
27
Mar 2026
SEOCH
Risk Management Arrangements in respect of the Ching Ming Festival and Easter Holidays – Reminderpdf
Ref Number: ORM/CRC/103/2026
20
Mar 2026
SEOCH
Risk Management Arrangements in respect of the Ching Ming Festival and Easter Holidayspdf
Ref Number: ORM/CRC/093/2026
20
Mar 2026
SEOCH
Reminder on Payment Obligations of Clearing Participantspdf
Ref Number: ORM/CRC/090/2026
13
Mar 2026
SEOCH
Reminder: SFTP Facilities Upgrade for the Report Access Platformpdf
Ref Number: PT/CLR/SEOCH/036/2026
04
Mar 2026
SEOCH
Reserve Fund Thresholdpdf
Ref Number: GRM/QRM/001/2026
04
Mar 2026
SEOCH
Stock Collateral Haircutpdf
Ref Number: ORM/CRC/071/2026
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